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Eldo C. Koenig papers

Identifier: CBI 53

Scope and Content Note

The collection contains records related to Eldo Koenig's development of an analog computer for the Allis-Chalmers Manufacturing Company of West Allis, Wisconsin, to aid in engineering studies. The collection documents the design and construction process for the computer, and a photograph of the computer. In addition, the collection contains case studies done with the via computer, a photocopy of Koenig's Alfred Nobel Prize, and citations to Koenig's articles on the development of the computer.


  • 1943-1960


Language of Materials


Access to materials:

Access to the collection is unrestricted.


CBI holds the copyright to all materials in the collection, except for items covered by a prior copyright (such as published materials). Researchers may quote from the collection under the fair use provisions of the copyright law (Title 17, U.S. Code).

Biographical Note

After receiving his BS in Electrical engineering from Washington University in 1943, Eldo C. Koenig began at Allis-Chalmers Manufacturing Company as a test engineer. He completed his MS at the Illinois Institute of Technology in 1949 and received his PhD from the University of Wisconsin in 1956. Koenig held various positions at Allis-Chalmers including supervisor of the computer laboratory. In 1962, he left Allis-Chalmers to take a teaching position with the University of Wisconsin. Koenig was active in several professional organizations including the Association for Computing Machinery and the Institute of Electrical and Electronics Engineers.


  1. Koenig, Eldo C.In American Men & Women of Science,17th ed., vol. 4, p. 421.


1 box (0.4 cubic feet)


Collection contains records relating to the design, construction, and operation of an analog computer at the Allis-Chalmers Manufacturing Company including notes, sketches, diagrams, articles, a photograph of the computer, and case studies using the computer.

Arrangement of Collection

The materials in this collection are arranged into the following groups:

  1. Fundamentals of Design and Programming, 1950-1960
  2. Design and Construction, 1943-1952
  3. Case Studies, 1948-1952
  4. Ephemera, 1950-1960


The records were given to the Charles Babbage Institute by Eldo C. Koenig in 1989.

Eldo C. Koenig Papers, 1943-1960. Finding Aid.
Prepared by Kevin D. Corbitt, June 1991.
March 2004
Language of description
Script of description
Language of description note

Collecting Area Details

Contact The Charles Babbage Institute Archives Collecting Area

Elmer L. Andersen Library
222 - 21st Avenue South
Minneapolis MN 55455